Bump phpunit/phpunit from 12.3.10 to 12.5.8 #85

Job	Run time
Create Release / Required Labels / Required Labels	4s
Create Release / Set Milestone / Supported Versions Matrix	4s
Create Release / Diff / Composer Diff / Comment composer.lock diff	11s
Create Release / Diff / Helm Diff	0s
Create Release / Diff / Terraform Diff	0s
Create Release / Craft Release	0s
Create Release / Set Milestone / Supported Threading Matrix / Supported Threading Matrix	3s
Create Release / Set Milestone / Figure out what the version should be	33s
Create Release / Set Milestone / Set Milestone / Set Milestone	9s
	1m 4s

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